Table 2.
Analysis of variance (ANOVA) for the quadratic polynomial model for level optimization of enzymatic preparation of daidzein.
| Source | Sum of Square | df | Mean Square | F-Value | p-Value | Significance Level |
|---|---|---|---|---|---|---|
| Model | 26,090.77 | 14 | 1863.63 | 62.75 | <0.0001 | Sig |
| A-RT | 1184.05 | 1 | 1184.05 | 39.87 | <0.0001 | |
| B-Temp | 3717.12 | 1 | 3717.12 | 125.15 | <0.0001 | |
| C-pH | 7405.3 | 1 | 7405.3 | 249.32 | <0.0001 | |
| D-EL | 2745.19 | 1 | 2745.19 | 92.43 | <0.0001 | |
| AB | 0.16 | 1 | 0.16 | 0.005387 | 0.9425 | |
| AC | 51.12 | 1 | 51.12 | 1.72 | 0.2106 | |
| AD | 0.56 | 1 | 0.56 | 0.019 | 0.8925 | |
| BC | 481.8 | 1 | 481.8 | 16.22 | 0.0012 | |
| BD | 10.56 | 1 | 10.56 | 0.36 | 0.5605 | |
| CD | 128.82 | 1 | 128.82 | 4.34 | 0.0561 | |
| A2 | 541.98 | 1 | 541.98 | 18.25 | 0.0008 | |
| B2 | 1769.34 | 1 | 1769.34 | 59.57 | <0.0001 | |
| C2 | 9754.11 | 1 | 9754.11 | 328.4 | <0.0001 | |
| D2 | 836.1 | 1 | 836.1 | 28.15 | <0.0001 | |
| Residual | 415.82 | 14 | 29.7 | |||
| Lack of fit | 342.65 | 10 | 34.26 | 1.87 | 0.2858 | Not Sig |
| Pure Error | 73.17 | 4 | 18.29 | |||
| Cor Total | 26,506.59 | 28 | ||||
| R2 | 0.9843 | |||||
| Adj R2 | 0.9686 | |||||
| C.V. % | 9.74 | |||||
| Adj precision | 23.789 |